Add native Windows binary for bison.

bison/share/bison/lalr1.cc

Index: bison/share/bison/lalr1.cc
===================================================================
--- bison/share/bison/lalr1.cc	(revision 0)
+++ bison/share/bison/lalr1.cc	(revision 0)
@@ -0,0 +1,1157 @@
+# C++ skeleton for Bison
+
+# Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008
+# Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+m4_include(b4_pkgdatadir/[c++.m4])
+
+m4_define([b4_parser_class_name],
+          [b4_percent_define_get([[parser_class_name]])])
+
+# The header is mandatory.
+b4_defines_if([],
+              [b4_fatal([b4_skeleton[: using %%defines is mandatory]])])
+
+# Backward compatibility.
+m4_define([b4_location_constructors])
+m4_include(b4_pkgdatadir/[location.cc])
+
+# We do want M4 expansion after # for CPP macros.
+m4_changecom()
+m4_divert_push(0)dnl
+b4_defines_if(
+[@output(b4_spec_defines_file@)
+b4_copyright([Skeleton interface for Bison LALR(1) parsers in C++],
+             [2002, 2003, 2004, 2005, 2006, 2007, 2008])
+dnl FIXME: This is wrong, we want computed header guards.
+[
+/* C++ LALR(1) parser skeleton written by Akim Demaille.  */
+
+#ifndef PARSER_HEADER_H
+# define PARSER_HEADER_H
+
+]b4_percent_code_get([[requires]])[
+
+#include <string>
+#include <iostream>
+#include "stack.hh"
+
+]b4_namespace_open[
+  class position;
+  class location;
+]b4_namespace_close[
+
+#include "location.hh"
+
+/* Enabling traces.  */
+#ifndef YYDEBUG
+# define YYDEBUG ]b4_debug_flag[
+#endif
+
+/* Enabling verbose error messages.  */
+#ifdef YYERROR_VERBOSE
+# undef YYERROR_VERBOSE
+# define YYERROR_VERBOSE 1
+#else
+# define YYERROR_VERBOSE ]b4_error_verbose_flag[
+#endif
+
+/* Enabling the token table.  */
+#ifndef YYTOKEN_TABLE
+# define YYTOKEN_TABLE ]b4_token_table[
+#endif
+
+/* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N].
+   If N is 0, then set CURRENT to the empty location which ends
+   the previous symbol: RHS[0] (always defined).  */
+
+#ifndef YYLLOC_DEFAULT
+# define YYLLOC_DEFAULT(Current, Rhs, N)		\
+do {							\
+  if (N)						\
+    {							\
+      (Current).begin = (Rhs)[1].begin;			\
+      (Current).end   = (Rhs)[N].end;			\
+    }							\
+  else							\
+    {							\
+      (Current).begin = (Current).end = (Rhs)[0].end;	\
+    }							\
+} while (false)
+#endif
+
+]b4_namespace_open[
+
+  /// A Bison parser.
+  class ]b4_parser_class_name[
+  {
+  public:
+    /// Symbol semantic values.
+#ifndef YYSTYPE
+]m4_ifdef([b4_stype],
+[    union semantic_type
+    {
+b4_user_stype
+    };],
+[m4_if(b4_tag_seen_flag, 0,
+[[    typedef int semantic_type;]],
+[[    typedef YYSTYPE semantic_type;]])])[
+#else
+    typedef YYSTYPE semantic_type;
+#endif
+    /// Symbol locations.
+    typedef ]b4_percent_define_get([[location_type]])[ location_type;
+    /// Tokens.
+    struct token
+    {
+      ]b4_token_enums(b4_tokens)[
+    };
+    /// Token type.
+    typedef token::yytokentype token_type;
+
+    /// Build a parser object.
+    ]b4_parser_class_name[ (]b4_parse_param_decl[);
+    virtual ~]b4_parser_class_name[ ();
+
+    /// Parse.
+    /// \returns  0 iff parsing succeeded.
+    virtual int parse ();
+
+#if YYDEBUG
+    /// The current debugging stream.
+    std::ostream& debug_stream () const;
+    /// Set the current debugging stream.
+    void set_debug_stream (std::ostream &);
+
+    /// Type for debugging levels.
+    typedef int debug_level_type;
+    /// The current debugging level.
+    debug_level_type debug_level () const;
+    /// Set the current debugging level.
+    void set_debug_level (debug_level_type l);
+#endif
+
+  private:
+    /// Report a syntax error.
+    /// \param loc    where the syntax error is found.
+    /// \param msg    a description of the syntax error.
+    virtual void error (const location_type& loc, const std::string& msg);
+
+    /// Generate an error message.
+    /// \param state   the state where the error occurred.
+    /// \param tok     the lookahead token.
+    virtual std::string yysyntax_error_ (int yystate]dnl
+b4_error_verbose_if([, int tok])[);
+
+#if YYDEBUG
+    /// \brief Report a symbol value on the debug stream.
+    /// \param yytype       The token type.
+    /// \param yyvaluep     Its semantic value.
+    /// \param yylocationp  Its location.
+    virtual void yy_symbol_value_print_ (int yytype,
+					 const semantic_type* yyvaluep,
+					 const location_type* yylocationp);
+    /// \brief Report a symbol on the debug stream.
+    /// \param yytype       The token type.
+    /// \param yyvaluep     Its semantic value.
+    /// \param yylocationp  Its location.
+    virtual void yy_symbol_print_ (int yytype,
+				   const semantic_type* yyvaluep,
+				   const location_type* yylocationp);
+#endif
+
+
+    /// State numbers.
+    typedef int state_type;
+    /// State stack type.
+    typedef stack<state_type>    state_stack_type;
+    /// Semantic value stack type.
+    typedef stack<semantic_type> semantic_stack_type;
+    /// location stack type.
+    typedef stack<location_type> location_stack_type;
+
+    /// The state stack.
+    state_stack_type yystate_stack_;
+    /// The semantic value stack.
+    semantic_stack_type yysemantic_stack_;
+    /// The location stack.
+    location_stack_type yylocation_stack_;
+
+    /// Internal symbol numbers.
+    typedef ]b4_int_type_for([b4_translate])[ token_number_type;
+    /* Tables.  */
+    /// For a state, the index in \a yytable_ of its portion.
+    static const ]b4_int_type_for([b4_pact])[ yypact_[];
+    static const ]b4_int_type(b4_pact_ninf, b4_pact_ninf)[ yypact_ninf_;
+
+    /// For a state, default rule to reduce.
+    /// Unless\a  yytable_ specifies something else to do.
+    /// Zero means the default is an error.
+    static const ]b4_int_type_for([b4_defact])[ yydefact_[];
+
+    static const ]b4_int_type_for([b4_pgoto])[ yypgoto_[];
+    static const ]b4_int_type_for([b4_defgoto])[ yydefgoto_[];
+
+    /// What to do in a state.
+    /// \a yytable_[yypact_[s]]: what to do in state \a s.
+    /// - if positive, shift that token.
+    /// - if negative, reduce the rule which number is the opposite.
+    /// - if zero, do what YYDEFACT says.
+    static const ]b4_int_type_for([b4_table])[ yytable_[];
+    static const ]b4_int_type(b4_table_ninf, b4_table_ninf)[ yytable_ninf_;
+
+    static const ]b4_int_type_for([b4_check])[ yycheck_[];
+
+    /// For a state, its accessing symbol.
+    static const ]b4_int_type_for([b4_stos])[ yystos_[];
+
+    /// For a rule, its LHS.
+    static const ]b4_int_type_for([b4_r1])[ yyr1_[];
+    /// For a rule, its RHS length.
+    static const ]b4_int_type_for([b4_r2])[ yyr2_[];
+
+#if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
+    /// For a symbol, its name in clear.
+    static const char* const yytname_[];
+#endif
+
+#if YYERROR_VERBOSE
+    /// Convert the symbol name \a n to a form suitable for a diagnostic.
+    virtual std::string yytnamerr_ (const char *n);
+#endif
+
+#if YYDEBUG
+    /// A type to store symbol numbers and -1.
+    typedef ]b4_int_type_for([b4_rhs])[ rhs_number_type;
+    /// A `-1'-separated list of the rules' RHS.
+    static const rhs_number_type yyrhs_[];
+    /// For each rule, the index of the first RHS symbol in \a yyrhs_.
+    static const ]b4_int_type_for([b4_prhs])[ yyprhs_[];
+    /// For each rule, its source line number.
+    static const ]b4_int_type_for([b4_rline])[ yyrline_[];
+    /// For each scanner token number, its symbol number.
+    static const ]b4_int_type_for([b4_toknum])[ yytoken_number_[];
+    /// Report on the debug stream that the rule \a r is going to be reduced.
+    virtual void yy_reduce_print_ (int r);
+    /// Print the state stack on the debug stream.
+    virtual void yystack_print_ ();
+
+    /* Debugging.  */
+    int yydebug_;
+    std::ostream* yycdebug_;
+#endif
+
+    /// Convert a scanner token number \a t to a symbol number.
+    token_number_type yytranslate_ (int t);
+
+    /// \brief Reclaim the memory associated to a symbol.
+    /// \param yymsg        Why this token is reclaimed.
+    /// \param yytype       The symbol type.
+    /// \param yyvaluep     Its semantic value.
+    /// \param yylocationp  Its location.
+    inline void yydestruct_ (const char* yymsg,
+			     int yytype,
+			     semantic_type* yyvaluep,
+			     location_type* yylocationp);
+
+    /// Pop \a n symbols the three stacks.
+    inline void yypop_ (unsigned int n = 1);
+
+    /* Constants.  */
+    static const int yyeof_;
+    /* LAST_ -- Last index in TABLE_.  */
+    static const int yylast_;
+    static const int yynnts_;
+    static const int yyempty_;
+    static const int yyfinal_;
+    static const int yyterror_;
+    static const int yyerrcode_;
+    static const int yyntokens_;
+    static const unsigned int yyuser_token_number_max_;
+    static const token_number_type yyundef_token_;
+]b4_parse_param_vars[
+  };
+]b4_namespace_close[
+
+]b4_percent_define_flag_if([[global_tokens_and_yystype]],
+[b4_token_defines(b4_tokens)
+
+#ifndef YYSTYPE
+ /* Redirection for backward compatibility.  */
+# define YYSTYPE b4_namespace_ref::b4_parser_class_name::semantic_type
+#endif
+])
+b4_percent_code_get([[provides]])[]dnl
+
+[#endif /* ! defined PARSER_HEADER_H */]
+])dnl
+@output(b4_parser_file_name@)
+b4_copyright([Skeleton implementation for Bison LALR(1) parsers in C++],
+             [2002, 2003, 2004, 2005, 2006, 2007, 2008])
+b4_percent_code_get([[top]])[]dnl
+m4_if(b4_prefix, [yy], [],
+[
+// Take the name prefix into account.
+#define yylex   b4_prefix[]lex])[
+
+/* First part of user declarations.  */
+]b4_user_pre_prologue
+
+b4_defines_if([[
+#include "@basename(]b4_spec_defines_file[@)"]])[
+
+/* User implementation prologue.  */
+]b4_user_post_prologue
+b4_percent_code_get[]dnl
+
+[#ifndef YY_
+# if YYENABLE_NLS
+#  if ENABLE_NLS
+#   include <libintl.h> /* FIXME: INFRINGES ON USER NAME SPACE */
+#   define YY_(msgid) dgettext ("bison-runtime", msgid)
+#  endif
+# endif
+# ifndef YY_
+#  define YY_(msgid) msgid
+# endif
+#endif
+
+/* Suppress unused-variable warnings by "using" E.  */
+#define YYUSE(e) ((void) (e))
+
+/* Enable debugging if requested.  */
+#if YYDEBUG
+
+/* A pseudo ostream that takes yydebug_ into account.  */
+# define YYCDEBUG if (yydebug_) (*yycdebug_)
+
+# define YY_SYMBOL_PRINT(Title, Type, Value, Location)	\
+do {							\
+  if (yydebug_)						\
+    {							\
+      *yycdebug_ << Title << ' ';			\
+      yy_symbol_print_ ((Type), (Value), (Location));	\
+      *yycdebug_ << std::endl;				\
+    }							\
+} while (false)
+
+# define YY_REDUCE_PRINT(Rule)		\
+do {					\
+  if (yydebug_)				\
+    yy_reduce_print_ (Rule);		\
+} while (false)
+
+# define YY_STACK_PRINT()		\
+do {					\
+  if (yydebug_)				\
+    yystack_print_ ();			\
+} while (false)
+
+#else /* !YYDEBUG */
+
+# define YYCDEBUG if (false) std::cerr
+# define YY_SYMBOL_PRINT(Title, Type, Value, Location)
+# define YY_REDUCE_PRINT(Rule)
+# define YY_STACK_PRINT()
+
+#endif /* !YYDEBUG */
+
+#define yyerrok		(yyerrstatus_ = 0)
+#define yyclearin	(yychar = yyempty_)
+
+#define YYACCEPT	goto yyacceptlab
+#define YYABORT		goto yyabortlab
+#define YYERROR		goto yyerrorlab
+#define YYRECOVERING()  (!!yyerrstatus_)
+
+]b4_namespace_open[
+#if YYERROR_VERBOSE
+
+  /* Return YYSTR after stripping away unnecessary quotes and
+     backslashes, so that it's suitable for yyerror.  The heuristic is
+     that double-quoting is unnecessary unless the string contains an
+     apostrophe, a comma, or backslash (other than backslash-backslash).
+     YYSTR is taken from yytname.  */
+  std::string
+  ]b4_parser_class_name[::yytnamerr_ (const char *yystr)
+  {
+    if (*yystr == '"')
+      {
+        std::string yyr = "";
+        char const *yyp = yystr;
+
+        for (;;)
+          switch (*++yyp)
+            {
+            case '\'':
+            case ',':
+              goto do_not_strip_quotes;
+
+            case '\\':
+              if (*++yyp != '\\')
+                goto do_not_strip_quotes;
+              /* Fall through.  */
+            default:
+              yyr += *yyp;
+              break;
+
+            case '"':
+              return yyr;
+            }
+      do_not_strip_quotes: ;
+      }
+
+    return yystr;
+  }
+
+#endif
+
+  /// Build a parser object.
+  ]b4_parser_class_name::b4_parser_class_name[ (]b4_parse_param_decl[)]m4_ifset([b4_parse_param], [
+    :])[
+#if YYDEBUG
+    ]m4_ifset([b4_parse_param], [  ], [ :])[yydebug_ (false),
+      yycdebug_ (&std::cerr)]m4_ifset([b4_parse_param], [,])[
+#endif]b4_parse_param_cons[
+  {
+  }
+
+  ]b4_parser_class_name::~b4_parser_class_name[ ()
+  {
+  }
+
+#if YYDEBUG
+  /*--------------------------------.
+  | Print this symbol on YYOUTPUT.  |
+  `--------------------------------*/
+
+  inline void
+  ]b4_parser_class_name[::yy_symbol_value_print_ (int yytype,
+			   const semantic_type* yyvaluep, const location_type* yylocationp)
+  {
+    YYUSE (yylocationp);
+    YYUSE (yyvaluep);
+    switch (yytype)
+      {
+  ]m4_map([b4_symbol_actions], m4_defn([b4_symbol_printers]))dnl
+[       default:
+	  break;
+      }
+  }
+
+
+  void
+  ]b4_parser_class_name[::yy_symbol_print_ (int yytype,
+			   const semantic_type* yyvaluep, const location_type* yylocationp)
+  {
+    *yycdebug_ << (yytype < yyntokens_ ? "token" : "nterm")
+	       << ' ' << yytname_[yytype] << " ("
+	       << *yylocationp << ": ";
+    yy_symbol_value_print_ (yytype, yyvaluep, yylocationp);
+    *yycdebug_ << ')';
+  }
+#endif
+
+  void
+  ]b4_parser_class_name[::yydestruct_ (const char* yymsg,
+			   int yytype, semantic_type* yyvaluep, location_type* yylocationp)
+  {
+    YYUSE (yylocationp);
+    YYUSE (yymsg);
+    YYUSE (yyvaluep);
+
+    YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp);
+
+    switch (yytype)
+      {
+  ]m4_map([b4_symbol_actions], m4_defn([b4_symbol_destructors]))[
+	default:
+	  break;
+      }
+  }
+
+  void
+  ]b4_parser_class_name[::yypop_ (unsigned int n)
+  {
+    yystate_stack_.pop (n);
+    yysemantic_stack_.pop (n);
+    yylocation_stack_.pop (n);
+  }
+
+#if YYDEBUG
+  std::ostream&
+  ]b4_parser_class_name[::debug_stream () const
+  {
+    return *yycdebug_;
+  }
+
+  void
+  ]b4_parser_class_name[::set_debug_stream (std::ostream& o)
+  {
+    yycdebug_ = &o;
+  }
+
+
+  ]b4_parser_class_name[::debug_level_type
+  ]b4_parser_class_name[::debug_level () const
+  {
+    return yydebug_;
+  }
+
+  void
+  ]b4_parser_class_name[::set_debug_level (debug_level_type l)
+  {
+    yydebug_ = l;
+  }
+#endif
+
+  int
+  ]b4_parser_class_name[::parse ()
+  {
+    /// Lookahead and lookahead in internal form.
+    int yychar = yyempty_;
+    int yytoken = 0;
+
+    /* State.  */
+    int yyn;
+    int yylen = 0;
+    int yystate = 0;
+
+    /* Error handling.  */
+    int yynerrs_ = 0;
+    int yyerrstatus_ = 0;
+
+    /// Semantic value of the lookahead.
+    semantic_type yylval;
+    /// Location of the lookahead.
+    location_type yylloc;
+    /// The locations where the error started and ended.
+    location_type yyerror_range[2];
+
+    /// $$.
+    semantic_type yyval;
+    /// @@$.
+    location_type yyloc;
+
+    int yyresult;
+
+    YYCDEBUG << "Starting parse" << std::endl;
+
+]m4_ifdef([b4_initial_action], [
+m4_pushdef([b4_at_dollar],     [yylloc])dnl
+m4_pushdef([b4_dollar_dollar], [yylval])dnl
+    /* User initialization code.  */
+    b4_user_initial_action
+m4_popdef([b4_dollar_dollar])dnl
+m4_popdef([b4_at_dollar])])dnl
+
+  [  /* Initialize the stacks.  The initial state will be pushed in
+       yynewstate, since the latter expects the semantical and the
+       location values to have been already stored, initialize these
+       stacks with a primary value.  */
+    yystate_stack_ = state_stack_type (0);
+    yysemantic_stack_ = semantic_stack_type (0);
+    yylocation_stack_ = location_stack_type (0);
+    yysemantic_stack_.push (yylval);
+    yylocation_stack_.push (yylloc);
+
+    /* New state.  */
+  yynewstate:
+    yystate_stack_.push (yystate);
+    YYCDEBUG << "Entering state " << yystate << std::endl;
+
+    /* Accept?  */
+    if (yystate == yyfinal_)
+      goto yyacceptlab;
+
+    goto yybackup;
+
+    /* Backup.  */
+  yybackup:
+
+    /* Try to take a decision without lookahead.  */
+    yyn = yypact_[yystate];
+    if (yyn == yypact_ninf_)
+      goto yydefault;
+
+    /* Read a lookahead token.  */
+    if (yychar == yyempty_)
+      {
+	YYCDEBUG << "Reading a token: ";
+	yychar = ]b4_c_function_call([yylex], [int],
+				     [[YYSTYPE*], [&yylval]][]dnl
+b4_locations_if([, [[location*], [&yylloc]]])dnl
+m4_ifdef([b4_lex_param], [, ]b4_lex_param))[;
+      }
+
+
+    /* Convert token to internal form.  */
+    if (yychar <= yyeof_)
+      {
+	yychar = yytoken = yyeof_;
+	YYCDEBUG << "Now at end of input." << std::endl;
+      }
+    else
+      {
+	yytoken = yytranslate_ (yychar);
+	YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
+      }
+
+    /* If the proper action on seeing token YYTOKEN is to reduce or to
+       detect an error, take that action.  */
+    yyn += yytoken;
+    if (yyn < 0 || yylast_ < yyn || yycheck_[yyn] != yytoken)
+      goto yydefault;
+
+    /* Reduce or error.  */
+    yyn = yytable_[yyn];
+    if (yyn <= 0)
+      {
+	if (yyn == 0 || yyn == yytable_ninf_)
+	goto yyerrlab;
+	yyn = -yyn;
+	goto yyreduce;
+      }
+
+    /* Shift the lookahead token.  */
+    YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);
+
+    /* Discard the token being shifted.  */
+    yychar = yyempty_;
+
+    yysemantic_stack_.push (yylval);
+    yylocation_stack_.push (yylloc);
+
+    /* Count tokens shifted since error; after three, turn off error
+       status.  */
+    if (yyerrstatus_)
+      --yyerrstatus_;
+
+    yystate = yyn;
+    goto yynewstate;
+
+  /*-----------------------------------------------------------.
+  | yydefault -- do the default action for the current state.  |
+  `-----------------------------------------------------------*/
+  yydefault:
+    yyn = yydefact_[yystate];
+    if (yyn == 0)
+      goto yyerrlab;
+    goto yyreduce;
+
+  /*-----------------------------.
+  | yyreduce -- Do a reduction.  |
+  `-----------------------------*/
+  yyreduce:
+    yylen = yyr2_[yyn];
+    /* If YYLEN is nonzero, implement the default value of the action:
+       `$$ = $1'.  Otherwise, use the top of the stack.
+
+       Otherwise, the following line sets YYVAL to garbage.
+       This behavior is undocumented and Bison
+       users should not rely upon it.  */
+    if (yylen)
+      yyval = yysemantic_stack_[yylen - 1];
+    else
+      yyval = yysemantic_stack_[0];
+
+    {
+      slice<location_type, location_stack_type> slice (yylocation_stack_, yylen);
+      YYLLOC_DEFAULT (yyloc, slice, yylen);
+    }
+    YY_REDUCE_PRINT (yyn);
+    switch (yyn)
+      {
+	]b4_user_actions[
+	default:
+          break;
+      }
+    YY_SYMBOL_PRINT ("-> $$ =", yyr1_[yyn], &yyval, &yyloc);
+
+    yypop_ (yylen);
+    yylen = 0;
+    YY_STACK_PRINT ();
+
+    yysemantic_stack_.push (yyval);
+    yylocation_stack_.push (yyloc);
+
+    /* Shift the result of the reduction.  */
+    yyn = yyr1_[yyn];
+    yystate = yypgoto_[yyn - yyntokens_] + yystate_stack_[0];
+    if (0 <= yystate && yystate <= yylast_
+	&& yycheck_[yystate] == yystate_stack_[0])
+      yystate = yytable_[yystate];
+    else
+      yystate = yydefgoto_[yyn - yyntokens_];
+    goto yynewstate;
+
+  /*------------------------------------.
+  | yyerrlab -- here on detecting error |
+  `------------------------------------*/
+  yyerrlab:
+    /* If not already recovering from an error, report this error.  */
+    if (!yyerrstatus_)
+      {
+	++yynerrs_;
+	error (yylloc, yysyntax_error_ (yystate]dnl
+b4_error_verbose_if([, yytoken])[));
+      }
+
+    yyerror_range[0] = yylloc;
+    if (yyerrstatus_ == 3)
+      {
+	/* If just tried and failed to reuse lookahead token after an
+	 error, discard it.  */
+
+	if (yychar <= yyeof_)
+	  {
+	  /* Return failure if at end of input.  */
+	  if (yychar == yyeof_)
+	    YYABORT;
+	  }
+	else
+	  {
+	    yydestruct_ ("Error: discarding", yytoken, &yylval, &yylloc);
+	    yychar = yyempty_;
+	  }
+      }
+
+    /* Else will try to reuse lookahead token after shifting the error
+       token.  */
+    goto yyerrlab1;
+
+
+  /*---------------------------------------------------.
+  | yyerrorlab -- error raised explicitly by YYERROR.  |
+  `---------------------------------------------------*/
+  yyerrorlab:
+
+    /* Pacify compilers like GCC when the user code never invokes
+       YYERROR and the label yyerrorlab therefore never appears in user
+       code.  */
+    if (false)
+      goto yyerrorlab;
+
+    yyerror_range[0] = yylocation_stack_[yylen - 1];
+    /* Do not reclaim the symbols of the rule which action triggered
+       this YYERROR.  */
+    yypop_ (yylen);
+    yylen = 0;
+    yystate = yystate_stack_[0];
+    goto yyerrlab1;
+
+  /*-------------------------------------------------------------.
+  | yyerrlab1 -- common code for both syntax error and YYERROR.  |
+  `-------------------------------------------------------------*/
+  yyerrlab1:
+    yyerrstatus_ = 3;	/* Each real token shifted decrements this.  */
+
+    for (;;)
+      {
+	yyn = yypact_[yystate];
+	if (yyn != yypact_ninf_)
+	{
+	  yyn += yyterror_;
+	  if (0 <= yyn && yyn <= yylast_ && yycheck_[yyn] == yyterror_)
+	    {
+	      yyn = yytable_[yyn];
+	      if (0 < yyn)
+		break;
+	    }
+	}
+
+	/* Pop the current state because it cannot handle the error token.  */
+	if (yystate_stack_.height () == 1)
+	YYABORT;
+
+	yyerror_range[0] = yylocation_stack_[0];
+	yydestruct_ ("Error: popping",
+		     yystos_[yystate],
+		     &yysemantic_stack_[0], &yylocation_stack_[0]);
+	yypop_ ();
+	yystate = yystate_stack_[0];
+	YY_STACK_PRINT ();
+      }
+
+    yyerror_range[1] = yylloc;
+    // Using YYLLOC is tempting, but would change the location of
+    // the lookahead.  YYLOC is available though.
+    YYLLOC_DEFAULT (yyloc, (yyerror_range - 1), 2);
+    yysemantic_stack_.push (yylval);
+    yylocation_stack_.push (yyloc);
+
+    /* Shift the error token.  */
+    YY_SYMBOL_PRINT ("Shifting", yystos_[yyn],
+		     &yysemantic_stack_[0], &yylocation_stack_[0]);
+
+    yystate = yyn;
+    goto yynewstate;
+
+    /* Accept.  */
+  yyacceptlab:
+    yyresult = 0;
+    goto yyreturn;
+
+    /* Abort.  */
+  yyabortlab:
+    yyresult = 1;
+    goto yyreturn;
+
+  yyreturn:
+    if (yychar != yyempty_)
+      yydestruct_ ("Cleanup: discarding lookahead", yytoken, &yylval, &yylloc);
+
+    /* Do not reclaim the symbols of the rule which action triggered
+       this YYABORT or YYACCEPT.  */
+    yypop_ (yylen);
+    while (yystate_stack_.height () != 1)
+      {
+	yydestruct_ ("Cleanup: popping",
+		   yystos_[yystate_stack_[0]],
+		   &yysemantic_stack_[0],
+		   &yylocation_stack_[0]);
+	yypop_ ();
+      }
+
+    return yyresult;
+  }
+
+  // Generate an error message.
+  std::string
+  ]b4_parser_class_name[::yysyntax_error_ (int yystate]dnl
+b4_error_verbose_if([, int tok])[)
+  {
+    std::string res;
+    YYUSE (yystate);
+#if YYERROR_VERBOSE
+    int yyn = yypact_[yystate];
+    if (yypact_ninf_ < yyn && yyn <= yylast_)
+      {
+	/* Start YYX at -YYN if negative to avoid negative indexes in
+	   YYCHECK.  */
+	int yyxbegin = yyn < 0 ? -yyn : 0;
+
+	/* Stay within bounds of both yycheck and yytname.  */
+	int yychecklim = yylast_ - yyn + 1;
+	int yyxend = yychecklim < yyntokens_ ? yychecklim : yyntokens_;
+	int count = 0;
+	for (int x = yyxbegin; x < yyxend; ++x)
+	  if (yycheck_[x + yyn] == x && x != yyterror_)
+	    ++count;
+
+	// FIXME: This method of building the message is not compatible
+	// with internationalization.  It should work like yacc.c does it.
+	// That is, first build a string that looks like this:
+	// "syntax error, unexpected %s or %s or %s"
+	// Then, invoke YY_ on this string.
+	// Finally, use the string as a format to output
+	// yytname_[tok], etc.
+	// Until this gets fixed, this message appears in English only.
+	res = "syntax error, unexpected ";
+	res += yytnamerr_ (yytname_[tok]);
+	if (count < 5)
+	  {
+	    count = 0;
+	    for (int x = yyxbegin; x < yyxend; ++x)
+	      if (yycheck_[x + yyn] == x && x != yyterror_)
+		{
+		  res += (!count++) ? ", expecting " : " or ";
+		  res += yytnamerr_ (yytname_[x]);
+		}
+	  }
+      }
+    else
+#endif
+      res = YY_("syntax error");
+    return res;
+  }
+
+
+  /* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
+     STATE-NUM.  */
+  const ]b4_int_type(b4_pact_ninf, b4_pact_ninf) b4_parser_class_name::yypact_ninf_ = b4_pact_ninf[;
+  const ]b4_int_type_for([b4_pact])[
+  ]b4_parser_class_name[::yypact_[] =
+  {
+    ]b4_pact[
+  };
+
+  /* YYDEFACT[S] -- default rule to reduce with in state S when YYTABLE
+     doesn't specify something else to do.  Zero means the default is an
+     error.  */
+  const ]b4_int_type_for([b4_defact])[
+  ]b4_parser_class_name[::yydefact_[] =
+  {
+    ]b4_defact[
+  };
+
+  /* YYPGOTO[NTERM-NUM].  */
+  const ]b4_int_type_for([b4_pgoto])[
+  ]b4_parser_class_name[::yypgoto_[] =
+  {
+    ]b4_pgoto[
+  };
+
+  /* YYDEFGOTO[NTERM-NUM].  */
+  const ]b4_int_type_for([b4_defgoto])[
+  ]b4_parser_class_name[::yydefgoto_[] =
+  {
+    ]b4_defgoto[
+  };
+
+  /* YYTABLE[YYPACT[STATE-NUM]].  What to do in state STATE-NUM.  If
+     positive, shift that token.  If negative, reduce the rule which
+     number is the opposite.  If zero, do what YYDEFACT says.  */
+  const ]b4_int_type(b4_table_ninf, b4_table_ninf) b4_parser_class_name::yytable_ninf_ = b4_table_ninf[;
+  const ]b4_int_type_for([b4_table])[
+  ]b4_parser_class_name[::yytable_[] =
+  {
+    ]b4_table[
+  };
+
+  /* YYCHECK.  */
+  const ]b4_int_type_for([b4_check])[
+  ]b4_parser_class_name[::yycheck_[] =
+  {
+    ]b4_check[
+  };
+
+  /* STOS_[STATE-NUM] -- The (internal number of the) accessing
+     symbol of state STATE-NUM.  */
+  const ]b4_int_type_for([b4_stos])[
+  ]b4_parser_class_name[::yystos_[] =
+  {
+    ]b4_stos[
+  };
+
+#if YYDEBUG
+  /* TOKEN_NUMBER_[YYLEX-NUM] -- Internal symbol number corresponding
+     to YYLEX-NUM.  */
+  const ]b4_int_type_for([b4_toknum])[
+  ]b4_parser_class_name[::yytoken_number_[] =
+  {
+    ]b4_toknum[
+  };
+#endif
+
+  /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives.  */
+  const ]b4_int_type_for([b4_r1])[
+  ]b4_parser_class_name[::yyr1_[] =
+  {
+    ]b4_r1[
+  };
+
+  /* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN.  */
+  const ]b4_int_type_for([b4_r2])[
+  ]b4_parser_class_name[::yyr2_[] =
+  {
+    ]b4_r2[
+  };
+
+#if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
+  /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
+     First, the terminals, then, starting at \a yyntokens_, nonterminals.  */
+  const char*
+  const ]b4_parser_class_name[::yytname_[] =
+  {
+    ]b4_tname[
+  };
+#endif
+
+#if YYDEBUG
+  /* YYRHS -- A `-1'-separated list of the rules' RHS.  */
+  const ]b4_parser_class_name[::rhs_number_type
+  ]b4_parser_class_name[::yyrhs_[] =
+  {
+    ]b4_rhs[
+  };
+
+  /* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
+     YYRHS.  */
+  const ]b4_int_type_for([b4_prhs])[
+  ]b4_parser_class_name[::yyprhs_[] =
+  {
+    ]b4_prhs[
+  };
+
+  /* YYRLINE[YYN] -- Source line where rule number YYN was defined.  */
+  const ]b4_int_type_for([b4_rline])[
+  ]b4_parser_class_name[::yyrline_[] =
+  {
+    ]b4_rline[
+  };
+
+  // Print the state stack on the debug stream.
+  void
+  ]b4_parser_class_name[::yystack_print_ ()
+  {
+    *yycdebug_ << "Stack now";
+    for (state_stack_type::const_iterator i = yystate_stack_.begin ();
+	 i != yystate_stack_.end (); ++i)
+      *yycdebug_ << ' ' << *i;
+    *yycdebug_ << std::endl;
+  }
+
+  // Report on the debug stream that the rule \a yyrule is going to be reduced.
+  void
+  ]b4_parser_class_name[::yy_reduce_print_ (int yyrule)
+  {
+    unsigned int yylno = yyrline_[yyrule];
+    int yynrhs = yyr2_[yyrule];
+    /* Print the symbols being reduced, and their result.  */
+    *yycdebug_ << "Reducing stack by rule " << yyrule - 1
+	       << " (line " << yylno << "):" << std::endl;
+    /* The symbols being reduced.  */
+    for (int yyi = 0; yyi < yynrhs; yyi++)
+      YY_SYMBOL_PRINT ("   $" << yyi + 1 << " =",
+		       yyrhs_[yyprhs_[yyrule] + yyi],
+		       &]b4_rhs_value(yynrhs, yyi + 1)[,
+		       &]b4_rhs_location(yynrhs, yyi + 1)[);
+  }
+#endif // YYDEBUG
+
+  /* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX.  */
+  ]b4_parser_class_name[::token_number_type
+  ]b4_parser_class_name[::yytranslate_ (int t)
+  {
+    static
+    const token_number_type
+    translate_table[] =
+    {
+      ]b4_translate[
+    };
+    if ((unsigned int) t <= yyuser_token_number_max_)
+      return translate_table[t];
+    else
+      return yyundef_token_;
+  }
+
+  const int ]b4_parser_class_name[::yyeof_ = 0;
+  const int ]b4_parser_class_name[::yylast_ = ]b4_last[;
+  const int ]b4_parser_class_name[::yynnts_ = ]b4_nterms_number[;
+  const int ]b4_parser_class_name[::yyempty_ = -2;
+  const int ]b4_parser_class_name[::yyfinal_ = ]b4_final_state_number[;
+  const int ]b4_parser_class_name[::yyterror_ = 1;
+  const int ]b4_parser_class_name[::yyerrcode_ = 256;
+  const int ]b4_parser_class_name[::yyntokens_ = ]b4_tokens_number[;
+
+  const unsigned int ]b4_parser_class_name[::yyuser_token_number_max_ = ]b4_user_token_number_max[;
+  const ]b4_parser_class_name[::token_number_type ]b4_parser_class_name[::yyundef_token_ = ]b4_undef_token_number[;
+
+]b4_namespace_close[
+
+]b4_epilogue
+dnl
+@output(b4_dir_prefix[]stack.hh@)
+b4_copyright([Stack handling for Bison parsers in C++],
+             [2002, 2003, 2004, 2005, 2006, 2007, 2008])[
+
+#ifndef BISON_STACK_HH
+# define BISON_STACK_HH
+
+#include <deque>
+
+]b4_namespace_open[
+  template <class T, class S = std::deque<T> >
+  class stack
+  {
+  public:
+
+    // Hide our reversed order.
+    typedef typename S::reverse_iterator iterator;
+    typedef typename S::const_reverse_iterator const_iterator;
+
+    stack () : seq_ ()
+    {
+    }
+
+    stack (unsigned int n) : seq_ (n)
+    {
+    }
+
+    inline
+    T&
+    operator [] (unsigned int i)
+    {
+      return seq_[i];
+    }
+
+    inline
+    const T&
+    operator [] (unsigned int i) const
+    {
+      return seq_[i];
+    }
+
+    inline
+    void
+    push (const T& t)
+    {
+      seq_.push_front (t);
+    }
+
+    inline
+    void
+    pop (unsigned int n = 1)
+    {
+      for (; n; --n)
+	seq_.pop_front ();
+    }
+
+    inline
+    unsigned int
+    height () const
+    {
+      return seq_.size ();
+    }
+
+    inline const_iterator begin () const { return seq_.rbegin (); }
+    inline const_iterator end () const { return seq_.rend (); }
+
+  private:
+
+    S seq_;
+  };
+
+  /// Present a slice of the top of a stack.
+  template <class T, class S = stack<T> >
+  class slice
+  {
+  public:
+
+    slice (const S& stack,
+	   unsigned int range) : stack_ (stack),
+				 range_ (range)
+    {
+    }
+
+    inline
+    const T&
+    operator [] (unsigned int i) const
+    {
+      return stack_[range_ - i];
+    }
+
+  private:
+
+    const S& stack_;
+    unsigned int range_;
+  };
+]b4_namespace_close[
+
+#endif // not BISON_STACK_HH[]dnl
+]
+m4_divert_pop(0)
Property changes on: bison\share\bison\lalr1.cc
___________________________________________________________________
Added: svn:eol-style
   + LF